web server scanners

# Nikito
www.cirt.net
# Paros proxy
http://parosproxy.org/index.shtml
# WebScarb
http://www.owasp.org/index.php/Main_Page
# WebInspect
hp.com
# Burp Scanner
http://portswigger.net/
#Wikto
http://www.sensepost.com/research/wikto/
#Acunetix Web Security Scanner
http://www.acunetix.com/
# Rational AppScan
ibm.com
# N-stalker
http://nstalker.com/products/free/